diff --git a/ekg.cabal b/ekg.cabal
--- a/ekg.cabal
+++ b/ekg.cabal
@@ -1,5 +1,5 @@
 name:                ekg
-version:             0.4.0.11
+version:             0.4.0.12
 synopsis:            Remote monitoring of processes
 description:
   This library lets you remotely monitor a running process over HTTP.
@@ -38,7 +38,7 @@
     System.Remote.Snap
 
   build-depends:
-    aeson < 1.1,
+    aeson < 1.2,
     base >= 4.5 && < 4.10,
     bytestring < 1.0,
     ekg-core >= 0.1 && < 0.2,